Calling all Math Wizzes

[anigo]

Here's the question:

You're a vet at the zoo, and the first year you have 437 cases which is 11.74% of the animals in the zoo.

The second year you have 530 cases which is 13.46% of the animals in the zoo.

How is it possible that the number of cases you've seen from one year to the next has increased 21% but the utilization has only increased 15%

Comments

[fyremaven.livejournal.com]

the overall number of animals in the zoo has decreased.

[saavik.livejournal.com]

Actually, I think it means the overall number of animalls has increased by about 218:

First year, the total population was x where 437= (11.74/100)x
---->x= 43700/11.74=3722 (approx.)

Second year, the total population was y where 530= (13.46/100)y
---->y= 53000/13.45=3940 (approx.)